O(a) improvement of the axial current in lattice QCD to one-loop order of perturbation theory

Details O(a) improvement of the axial current in lattice QCD to one-loop order of perturbation theory O(a) improvement of the axial current in lattice QCD to one-loop order of perturbation theory

1996-06-26

arxiv.org/abs/hep-lat/9606016v1

Nucl.Phys. B479 (1996) 429-458

Physics

High Energy Physics

High Energy Physics - Lattice

38 pages, postscript file

Scientific paper

10.1016/0550-3213(96)00448-8

The conservation of the isovector axial current in lattice QCD with massless Wilson quarks is studied to one-loop order of perturbation theory. Following a strategy described in a previous publication, the O($a$) counterterm required for on-shell improvement of the current is computed. We also confirm an earlier result of Wohlert for the coefficient in front of the SW term in the improved action.

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